meta={


	__tostring=function()
		return "123"
	end
}
child={}

setmetatable(child,meta)
print(child)

meta2={


	__tostring=function()
		return "123"
		end
,
		__call=function(a)
			print(a)
			
print("234")
		end
	
}
child2={


	name="张三"
}

setmetatable(child2,meta2)
child2(1)
